錯誤：Listitem（String，String）在Listitem中不公開;不能從外面包

Question

訪問我得到了下面的錯誤

Error:(91, 37) error: Listitem(String,String) is not public in Listitem; cannot be accessed from outside package

我有2個包

這是Listitem.java

public class Listitem implements Parcelable { 
    String id; 
    //String name; 
    String url; 

    Listitem(Parcel in){ 
     this.id = in.readString(); 
     // this.name = in.readString(); 
     this.url = in.readString(); 
    } 

    Listitem(String name, String url) { 
     this.id = id; 
     this.url = url; 
    } 

    @Override 
    public int describeContents() { 
     return 0; 
    } 

    public void setUrl(String url) { 
     this.url = url; 
    } 

    public String getUrl() { 
     return url; 
    } 

    public void setId(String id) { 
     this.id = id; 
    } 

    public String getId() { 
     return id; 
    } 

    @Override 
    public void writeToParcel(Parcel dest, int flags) { 
     dest.writeString(this.id); 
     // dest.writeString(this.name); 
     dest.writeString(this.url); 

    } 

    public static final Parcelable.Creator<Listitem> CREATOR = new Parcelable.Creator<Listitem>() { 
     public Listitem createFromParcel(Parcel in) { 
      return new Listitem(in); 
     } 

     public Listitem[] newArray(int size) { 
      return new Listitem[size]; 
     } 
    }; 
} 

數據庫處理器

List<Listitem> Objectslist = new ArrayList<Listitem>(); 
     SQLiteDatabase db = this.getWritableDatabase(); 

     String selectQuery = "SELECT "+OBJECT_ID+" ,"+OBJECT_NAME+" ,"+OBJECT_URL +" FROM " + TABLE_OBJECTS; 
     Cursor cursor = db.rawQuery(selectQuery, null); 
     DatabaseUtils.dumpCursorToString(cursor); 
     // looping through all rows and adding to list 
     if (cursor.moveToFirst()) { 
      do { 
       Listitem object = new Listitem("1","b"); 

爲什麼我得到錯誤？已經Listitem是公開的，我錯過了什麼？

Answer 1

如果聲明是這樣的構造：

Listitem(String name, String url) { 

那麼他們將得到一個包只知名度......所以，爲了使它在其他包訪問，你需要做的構造公共太：

public Listitem(String name, String url) { 
     this.id = id; 
     this.url = url; 
    }